Rail chair or support.



' Patented May l5, I900. G. F. DEWDNEY.

RAIL CHAIR 0R SUPPORT.

(Application filed Oct. 20, 1899.)

2 Sheets-Shoat I.

(No Model.)

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"0. 649,439. Patented Mav l5. I900.

G F DEWDNEY BAIL CHAIR UR SUPPORT. (Appl at on filed Oct. 20 1899) 2Sheets-Shoot 2.

(No Model.)

n GF WIT NESSES. i Q65 44V m m n A Nrrn STATES PATENT OFFICE.

GEORGE FILEIVOOD DEWVDNEY, OF CARDIFF, ENGLAND.

RAIL CHAIR OR SUPPORT.

SPECIFICATION forming part of Letters Patent No. 649,439, dated May 15,1900.

Application filed October 20, 1899.

To all whom it may concern:

Be it known that I, GEORGE FILnwooD DEWDNEY, a subject of the Queen ofGreat Britain and Ireland, and a resident of Dumballs Road, (Docks,)Cardiff, in the county of Glamorgan, England, have invented certain newand useful Improvements Relating to Rail Chairs or Supports, (for whichI have filed an application in Great Britain, No. 6,133, bearing dateMarch 21, 1899,) of which the following is a specification.

My invention has for its object the construction of rail-supports or chairs and fastening devices that shall more effectually secure and retainthe rails in position than the ordinary chairs with wooden keys orwedges at present in general use.

In order that my invention may be the more readily understood, I appendhereunto two sheets of explanatory drawings, to be hereinafter referredto.

Figure 1 is an end elevation showing one of my improved chairs with therail secured in position therein. Fig. 2 is an elevation showing oneside of the chair, and Fig. 3 a similar view showing a portion of theother side. Figs. 4: and 5 are side elevations of the respective wedgesshown at Fig. 1. Fig. 6 is an elevation, and Fig. 6 a plan, of a boltand nut for securing or adjusting wedge. Fig. 7 is a side elevation, andFig. '7 an end elevation, of a wedge-retaining key. Fig. 8 is anelevation of another form of retaining-key.

The same reference-letters in the different views indicate the sameparts.

I make the body of the chair A from a rolled steel bar of a trough orchannel section, such bar being cut into lengths corresponding with therequired length of chair. The channel sides, between which the rail B isplaced, are formed at an angle other than a right angle to the base ofthe chair, as shown at Fig. 1, so that when the rail is in position inthe trough or channel the spaces between the web of the rail and thechannel sides are of a wedge-like shape or section. The dimensions ofthe rolled section-bar are made to suit the particular service and typeof rail for which the chairs are required, as are also the wedges andother parts.

The rail is secured within the chair or sup Serial No. 734.229. onmodel.)

port by means of wedges, preferably such as O and D, of rolled metal;but they may be of cast or malleable cast metal or wood, made to suitthe section of rail in use. The wedge C is preferably trough or Ushaped, as illustrated, and has a slot or aperture, as 0, formed in sameto admit the nut E, which is inserted in the wider part of the slot (0,Fig. 2, in one side of the chair. The bolt F works through the nut E,and its lower end abuts against the wedge, as illustrated. Thus ontightening up the said bolt the wedge O is forced between the rail andchair side, and when the wedge is properly secured the end of the boltwill project below the bottom of the slot (1 in the chair side, and soboth the bolt and the nut will be prevented from working out through thesaid slot. The wedge C will also be prevented from working out of thechair. The wedge D, I preferably retain in position by means of a key G,of a tapered or wedgeshaped section, as shown at Fig. 7", having ears orprojections g. The hole or aperture 01 in the wedge D is of sufficientdimensions to admit any part of the key G; but the wedge-shaped ortapered slot or recess a, Fig. 3, in the side of the chair orrail-support is not wide enough to admit the upper por-- tion of the keywhere the aforesaid ears or projections g are disposed; but the wedgehole or aperture cl is so disposed that when the wedge D is placed inposition the said aperture projects sufficiently above the top of thechair side to admit the projections g of the key G. The key is afterwarddriven tightly home to the position indicated until the projections gare below the top of chair side. Neither the key nor the wedge can thenwork out of position when in service. I sometimes employ a key-pin, suchas shown at Fig. 8, either of a circular or angular section and taperedor straight, and fit the same into corresponding holes or apertures inthe body of the chair and the wedges, and I also employ other fasteningsor retainingpieces in place of those hereinbefore described. In somecases I dispense entirely with the use of wedge fastening or retainingdevices. Af-

ter the rail has been properly secured within the chair by means of theaforesaid wedges any tendency of the rail to lift, to sink, or to cantover when in service will impart or tend to impart a correspondingmovement to the wedges, and thus owing to the inclined position of thechair sides forming the wedge shaped spaces hereinbefore described therail and the wedges will automatically jam, and so become the moreeifectually and rigidly secured together. 4

To prevent creeping of the rail relatively to the chair by the action ofthe rolling-stock, I sometimes pass a bolt entirely through thechair-body and the rail and fastening devices, thus eifectually securingthem together.

WVhen constructing a joint-chair in accordance with myinvention, I makethe chair-body of sufiEicient length to receive wedges that shall extenda sufficient distance along the adjacent ends of each rail. Noindependent fish-plates are required With such a jointchair. The wedgeson one or both sides of rail maybein one or more lengths, as desired.Ilavin g thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a rail chair or support having sides parallel toeach other but inclined to the base at an angle other than a rightangle, of a trough-shaped wedge '0, bolt F, and nut E, engaging both thewedge

